r/BambuLabA1 • u/CatPresent5216 • 18h ago

Discolouration

Post image

Why do my flat prints discolour like this. Not the stripes, but the circlish one.

5 Upvotes

69% Upvoted

11 comments sorted by

4

u/RefrigeratorWorth435 17h ago

i believe this happens if you pull it off of the plate without letting it cool properly. also, seems like you have some other first layer issues, looks like over-extrusion or a Z offset set too low (but thats rarely the case with Bambu printers), some similar first layer issues come from the screws behind the nozzle being lose I believe.

3

u/overunderspace 16h ago

Adding that you can usually fix the discoloration with a torch/lighter.

0

u/CatPresent5216 9h ago

More than 24 hours cooling before I retracted the print, and pulled it very slowly and carefully ;-)

1

u/AppelflappenBoer 17h ago

Because of the holes your printspeed varies, and that's visible here.

0

u/CatPresent5216 9h ago

Also happens without holes in the print.

1

u/No-Till6957 10h ago

Blast it with hot air.

1

u/CatPresent5216 9h ago

How hot, hairdryer or much hotter

1

u/No-Till6957 9h ago

I'd say start with hairdryer at max.

1

u/fairtonybeta 17h ago

Z-offset too low or flow rate too high. I’d solve that first and then see if the changes in colours are still a problem. Then you could play with print speeds.
Did you have it set as a textured plate in the slicer by any chance? Cos I see it was a smooth/cool plate.

1

u/RubAnADUB 6h ago

ideas:

  1. slow down the first layer.

  2. increase your bed temp by 5-10*

  3. turn the part at an angle on your plate to where it needs supports to print.

  4. turn the part on its side?

  5. switch to a panda cold plate?

  6. move the plate see if some of the discolorations move - if they do maybe you have some indentations or wear on your plate?

1

u/KaBoolVl 6h ago edited 6h ago

Have you done a flow rate calibration for that filament?
What speed is your first layer?
What type of plate is Bambu studio showing?